Lay-mark preventer



A. E. RAVENELLE.

LAY MARK PREVENTER.

APPLICATION FILED FEB- I3| l92l. 1,409,778, Patented Marrl l, 1922.

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jwuemioz A. E. R AVENEL LE. LAY MARK PREVENTER.

APPLICATION FILED FEB. 13. 192]. 1,409,77 8. Patented Mar. 14,1922.

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411E. Pavenelle.

A. E. RAVENELLE.

LAY MARK PREVENTER. APPLICATION FILED FEB. 18, 1921- 1,409,778. PatentedMar. 14, 1922.

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amputee z/enelle ADELARD E. RAVENELLE, OF NORWICH, CONNECTICUT.

LAY-MARK PREVENTER.

Specification of Letters Patent.

Patented Mar. 14, 1922.

Application filed February 18, 1921. Serial No. 445,992.

To all whom it may concern-.-

Be it known that I, ADELARD E. RAVEN- nLLn, a citizen of the UnitedStates, residing at Norwich, inthe county of New London and State ofConnecticut, have invented certain new and useful Improvements in aLay-Mark Preventer; and I do hereby declare the following to be afullfclear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The object of the invention is to provide means for preventing lay marksin woven fabrics, or to provide an indicator whereby the weave line offabrics in a loom and in the course of production may be accuratelyadjusted with relation to the path of movement of the lay to avoid thecrowding of the picks when the loom is'restarted after the operationthereof has been interrupted and to prevent a loose or widely spacedarrangement of the picks, one fault resulting in that when the machineis set to'producea fabric having a specified number of picks to theinch, should the operat on be interrupted for any cause and it benecessary for the operator or weaver to pick out or remove some of thefibres, thereby dislocating the weave- -line of the woven fabric withrela tion to the pathof movement of the lay, his

readjustment of the weave line must be absolutely accurate or themachine upon being restarted will lay the fibres too close together fora certain distance or too far apart throughout a number of picks oroperations, with the result of laying either an extra thicknessorcloseness of the fibres or picks, or a looseness or undue separationthereof constituting what isknown as above indicated as either a heavyor a light lay mark; and it is with the object of enabling the weaverafter such an interruption of the operation of the loom to readjust theweave line with absolute accuracy and without loss of time sons toenable him to resume the weaving operation where it was interrupted andlay the picks at exactly the rightintervals in accordance withthesetting of the machine and the portion of the fabric already woven, tothe end that the possibility of forming lay marks may be avoided, thatthe mechanism forming the subject of invention has been devlsed; and thesame conslsts in a construction, combination, and arrangement of partsconstituting an apparatus which may when not in use be convenientlystored under or adjacent to the loom in position for immediate use whenrequired, a preferred embodiment of such mechanism being illustrated inthe accompanying drawiug, wherein:

Figure 1 is a front view of the apparatus arranged in operative relationwith a loom, a portion .of which is shown to indicate the mode ofoperation of the apparatus.

Figure 2 is a side view of the same.

Figure 3 is an enlarged detail view of the head of the apparatus.

Figure 4C is a view of the gage arm detached.

Figure 5 shaft.

The apparatus consists essentially of a head indicated generally at '10,which is is a similar view of the crank adapted to normally occupy aposition beneath the loom indicated generally at 11 or what'is known asa heavy lay mark and the other in a light lay mark, due to the factbeneath the planeof movement of the woven fabric and the mechanism bywhich the same is produced, under such conditions as to adapt it to bemoved into the plane of the fabric when required to justify the weaveline in-the resetting of the woven portion of the fabric after aninterruption of the operation of the loom, and to provide for suchmovement of the head it maybe supported by a vertically movable plungerrod 12, mountedin suitable guides 13 and 14 upon a standard 15 having asuitable base 16 which may be boltedor otherwise secured to the floor, atreadle 17 being arranged in operative relation with the plunger rod andmounted upon a suitable bracket 18, a cushion spring 19 serving torelieve the jars on the head when pressure is removed from the treadleto per 'mit the mechanism to drop from the plane of the fabric. 7

The justifying mechanism in the illustrated embodiment of the inventionconsists cated at 26. This gage arm is of'pendulous construction, havingthe counter-weight 2T cause a heavy lay mark by crowding the itsnormalor truly vertical-position will be weft threads in the beating movementof the lay.

Connected with the gage arm is an indicator mechanism consisting of apointer 28 traversing a dial plate 29 supported by the bracket 20 andhaving a suitable normal or unit mark 30 to which the pointer should bedirected when the gage arm is in its normal position with the edges ofthe blades 24 in light touching contact with the weave line of thefabric. I

In the construction illustrated, motion is communicated from the gagearm to the pointer by means of a crank shaft 31 having a terminalspindle 32 mounted in a bearing in the bracket 20 and carrying thepointer,

and having at its opposite end a pin 38 arranged'ina slot 34 of the gagearm near the lower or weighted end thereof so that a multiplied in therepresention thereof by the pointer ;upon the dial plate and willindicate unmistakably to the operator that 'adjustment of the weave lineis necessary Obviously if the weave line is too far back and is outofcontact with the. edges of the blades 24 the fact may readily bedetermined by a slight swinging'movement of the gage arm..' When theedges of the blades are in" *light contact with the weave line and thepointer is directed to the unit or neutral mark 30 of the dial, theweaver is advised. that the fabric is in proper position to re-f I sumethe operation of, the loom without peesibility of producing a lay mark.

Owmg to the fact that the apparatus may be thrown into operativerelation with the fabric merely by pressure upon the treadle,

. it will be obvious that the adjustment of the weave line of a fabricafter an interruption of.

the operation of a loom, may be effected promptly as the device willinstantlyindi. cate whether or notthe weave line is inthe. properposition and the direction in which it must be moved in order that itmay.

occupy the proper position, and as a consei quence much loss of time maybe avoided in the setting of tlie'fabricrand the reductionof the valueof the fabric by producing lay marks therein'which involvesa well recognized commercial depreciation, may..,be.

avoided-, itbeing a well known fact that only. the most skillfulweaverscan properly adjust-the weave line merely bytesting the" same throughthe movement of the lay or otherwise,"and then only by the exercise ofthe utmost care and under conditions involving a considerableexpenditure of time. The-lay preferably carries a bumper protector 34for preventing movement thereof when the apparatus embodying theinvention is in operative position, and in order to of the treadle topermit of the elevation of the gaging apparatus whereas when the handlever is movedtoward the machine to start the loom the latch ispermitted to drop into the path of the treadle and lock it againstmovement.

' Having thus described the invention,

what I claim is: i I

, 1. An apparatus for the purpose described havinga weave line indicatormovable in I a path perpendicular to the plane of movevery slightdeviation of the gagearm from ment of the fabric and supported by atreadle actuated plunger. I V

2. -An apparatus for the purpose described having a weave line indicatormovable toward and from the plane ofimovementof the fabric andprovidedwith a pendulcus the fabric and provided with a pendulous gagearm, and'a cooperatlng index for registermg deflections of the indicatorfrom the normal position.

4;. Anapparatus forthepurpose described I having a weave line indicatormovable toward and from the plane of movement of the .fabric andprovided with a pivotal counter-weighted gage arm having blades forinterpositlon between the warp threads and edge contact with the weaveline.

5. An apparatus for the purpose described having a weave. line indicatormovable toward and from the plane ofmovementof the fabric and. providedwith a pivotal counter-weighted gage arm having blades for interpositionbetween the warp threads and edge contact with the weaveline, and a:pointer operatively connected with thegage arm and traversing. a dialplate.

6. An apparatus for the purpose described having a weave line indicator.movable towardand from. theplane of movement of the fabric and providedwith 'a pivotal counter-weighted gage farm f havmg blades forinterposition between the warpthreads and edge contact with the weaveline, anda point er operatively connected with the gage arm andtraversing a dial plate, said connection consisting of a crank shaftcarrying the pointer and having slotted connection With the gage arm.

7. An apparatus for the purpose described having a Weave .line indicatormovable toward and from the plane of movement of the fabric and providedwith a weave line contacting element yieldingly movable in the directionof movement of the fabric, said indicator being carried by a movableframe,

ADELARD E. RAVEN ELLE.

lVitnesses CHAS, A. CHAMBERLAIN, THOMAS J. XVIGNALL.

